Radiator.



PATENTED OCT. 13, 1903n J. KELLY.

RADIATOR.

APPLIGATION IILIVID JUNE 12, 1902.

H0 MODEL,

, WEE====E ra'rns Patented October 13, 1903.

JOHN KELLY, CHICAGO, ILLINOIS.

RADIATOR.

SJPEGIFICATION forming part of Letters Patent No. 741,404, dated October 13, 1903.

Application filed June 12,1902. Serial No. 111.277. (N0 model.)

To all whom it may concern.-

Be it known that I, JOHN KELLY, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented new and useful Improvements in Radiators, of which the following is a specification.

My invention relates particularly to steam and hot-water radiators; and my primary object is to provide a simple, inexpensive, and thoroughly practicable radiator with inner and outer radiating-surfaces and through which air may circulate readily.

The invention is illustrated in preferred form in the accompanying drawings, in which- Figure 1 represents a broken plan view of a three-row radiator; Fig. 2, an enlarged broken view of a detached column of the intermediate row; Fig. 3, a section taken as indicated at line 3 of Fig. 2; Fig. 4, a vertical section of the upper port-ion of a column, the section being taken as indicated at line 4 of Fig. 3; and Fig. 5, a broken section showing the disposition of the seams of the made-up tubes employed in the columns.

Theimproved radiator comprises independently-formed columns A, arranged in rows (1 a a and joined together by right and left threaded unions 1). Each column comprises an outer tube 0 and an'inner tube a, affording between them an annular space 0 closed at the ends by flanges with which the tubes are provided. Each column of the radiator is equipped at its top and bottom with an ornamental annular cap or clip d, bearing two or more laterally-proj ectin g internally-threaded nipples d, The number of nipples for each clip depends upon the position of the column. Thus the clips for the corner-columns have two nipples, those for the intermediate columns of the side rows have three nipples, and those for the columns of the intermediate row have four nipples. The outer tube of each column has a perforation corresponding to each nipple, and as the clips have steam-tight connection with the columns perfeet connections between the columns are afforded when the unions are putin place. Each union has a wrench receiving portion, as shown. The tubes of each column are preferably form ed from sheet metal rolled into tubular form and lock-seamed at the meeting edges. The inner tube is formed with outwardly flaring top and bottom flangesf and the outer tube with inturned slightly-depressed flanges f, overlapping the flanges of the inner tube, The joints are all made tight by dipping in molten spelter or galvanizing the column. As shown in Fig. 3, the seams of the inner and outer tubes are arranged opposite to each other and the folded metal lies within the annular space between the tubes, and when the columns are arranged in a radiator the seam of the outer tube is turned to the wall. Thus when viewed as indicated in Fig. 5 neither the line of the inner nor that of the outer seam of the column is visible. The annular caps or rings 61 fit over the outer tubes, and downturned flanges d conceal the seam where the flanges ff meet, as shown in Fig. 4E. Said caps and flanges are formed in two parts, as shown, and are tightly secured to the outer tube by rivets g,and spelter is employed to close the joints.

The radiator may be supported by four or more wallbrackets h, (oneshown,) or any suitable support not interfering with the circulation of the air may be employed.

In use hot water, steam, or the like is circulated through the annular columns, being received at one end column of the middle row and discharged at the opposite end column of saidrow. The heating fluid circulates freely through the radiator,passing through the cross connections as well as through the longitudinal connections.

Obviously the details may be variously modified. Independentannularorhollow columns may be formed in any desired manner, and where of pipes, as shown, the nipples may be formed on cap-pieces or independently of each other.

Various other changes within the spirit of myinvention may be made. Hence no undue limitation should be understood from the foregoing detailed description.

\Vhat I regard as new, and desire to secure by Letters Patent, is-

1. A radiator comprising independently formed columns formed of inner and outer sheet-metal tubes, the inner tube of each 001- lar end caps at the tube ends covering said the column concealing the joint, and right joints, and nipples permanently joined to the and left threaded unions joining the columns IO outer tubes at perforations therein. at the nipples.

2. A radiator comprisin independent nip- 5 pie-equipped columns for ed with inner and JOHN KELLY outer sheet-metal tubes lock-joint seamed to- In presence ofgether at their ends, the inner tube being A. G. KITTLESON,

open-ended, an annular cap at each end of ALBERT D. BACOI. 

